This is encoded in Ogg/Theora which is a free open-source encoding. If you are on Linux, you should be able to play this video without problem. On MacOS, Damien Pollet told me to advertise Perian. I don't know for MS Windows users, but it should be easy.

During the current week, I will continue working on the UI. As soon as I have something ready to use by everyone, I will post an announce on the squeak-dev mailing list.

I have some problems with the MC2 model. I've sent mails to the mailing list but, currently, they prevent me from going much further without answers from Colin and/or Avi.